F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
164/111, 189/12
F16L 55/16 (2006.01)
Patent
CA 1312819
13DV 9049 METHOD AND APPARATUS FOR REPLACING A SECTION OF TUBING ABSTRACT OF THE DISCLOSURE A method and apparatus for replacing a damaged or defective section of a length of original piping or tubing located within a structure such as the turbine of a jet engine wherein access to the tubing is limited, and replacing such damaged section with a new section of tubing comprises inserting a cutter mounted at one end of a flexible shaft into the interior of the original tubing and rotating the shaft to cut out and remove the damaged section of tubing leaving at least one stub section of original tubing. The stub sections of original tubing are then prepared for welding or brazing to a section of replacement tubing with a series of tools each mounted to an elongated shaft to permit manipulation of such tubes onto the cut ends of the stub section of original tubing through an access opening in the structure where the tubing is located. These tools include a chamfering tool for forming a chamfer on both the inner and outer surfaces of the wall of the stub section, a deburring tool for removing burrs and surface irregularities from the outer surface of the stub section and a polishing tool for polishing the outer surfaces. The replacement section of tubing is connected to the stub section of original tubing by inserting a hollow mounting sleeve welded or brazed to the replacement section of tubing over the end of the stub section so that the end edge of the stub section engages a brazing ring carried in the interior of the hollow mounting sleeve against the end edge of the replacement section of tubing. The elongated nozzle of an acetylene torch is then inserted into the replacement section of tubing and heats the brazing ring to form a fluid-tight joint between the replacement section of tubing, the stub section of original tubing and the mounting sleeve.
580102
Flowers Gilbert Eugene
Kelly Earl Leroy Jr.
Lynch Henry Edward
Company General Electric
Craig Wilson And Company
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